I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I cannot talk, but I always reply when spoken to. What am I?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What is the Surname of Barbie Doll?